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Electronic properties and polaronic dynamics of semi-Dirac system within ladder approximation

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arxiv 1901.07881 v3 pith:KML37TNJ submitted 2019-01-20 cond-mat.quant-gas cond-mat.dis-nn

Chen-Huan Wu This is my paper · ORCID
classification cond-mat.quant-gascond-mat.dis-nn
keywords semi-diracsystemdynamicselectronicpropertiespolaronicstudiedtransport
verification ladder T0 review T1 audit T2 compute T3 formal

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We investigate the electronic properties of the semi-Dirac system and its polaronic dynamics when coupled with a fermi bath with quadratic dispersion. The electronic anisotropic transport properties and the semiclassical dynamics of the semi-Dirac system are studied, including the density-of-states, conductivity, transport relaxation rate, specific heat, electrical current denity, and free energy. The attractive polaron formed as the semi-Dirac impurity dressed with the particle-hole excitations in a two-dimensional system are studied both analytically and numerically. The pair propagator, self-energy, spectral function are being detailly calculated and discussed.

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  1. Attractive polaron formed in doped nonchiral/chiral parabolic system within ladder approximation

    cond-mat.quant-gas 2019-08 reject novelty 4.0 of 10

    For a chiral parabolic band, the polaron self-energy and pair propagator are claimed to depart strongly from the nonchiral case at low momentum, producing instabilities that disappear at large momentum.

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